By the book you shouldnt use it to torque wheel bolts, but in the real world everyone does it esp at the dealership. Their impact guns are calibrated to not over torque it.

No offense but this statement is funny "Their impact guns are calibrated to not over torque it" can not calibrate an impact gun, too many variables , one is psi input into the gun and the other impacts per minute. Even torque wrenches when calibrated they are +\- certain percentage depending on brand and quality.

Torque sticks are not that accurate either, gun variables like how many impacts per minute it is set to and input psi.

Never use impact gun to install wheel lugs. The reason is uneven torquing of the lugs that could possibly warp the rotor hat causing vibrations during braking. Over-torqued lugs cause a problem for the owner if one gets a flat and the nuts can not be loosened with a tire iron on the side of the road. Others are stripped studs, cross thread and possibly others.